Class: Externals::Ext

Inherits:
Object
  • Object
show all
Extended by:
FileUtils
Includes:
FileUtils
Defined in:
lib/externals/ext.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Ext

Returns a new instance of Ext.



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# File 'lib/externals/ext.rb', line 310

def initialize options = {}
  super()

  scm = configuration['.']
  scm = scm['scm'] if scm
  scm ||= options[:scm]

  type = configuration['.']
  type = type['type'] if type

  type ||= options[:type]

  if type
    install_project_type type
  else
    possible_project_types = self.class.project_types.select do |project_type|
      self.class.project_type_detector(project_type).detected?
    end

    if possible_project_types.size > 1
      raise "We found multiple project types that this could be: #{possible_project_types.join(',')}
Please use
 the --type option to tell ext which to use."
    else
      possible_project_types.each do |project_type|
        install_project_type project_type
      end
    end
  end
end

Instance Attribute Details

#path_calculator ⇒ Object

Returns the value of attribute path_calculator.



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# File 'lib/externals/ext.rb', line 104

def path_calculator
  @path_calculator
end

Class Method Details

.new_opts(main_options, sub_options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 126

def self.new_opts main_options, sub_options
  opts = OptionParser.new(
    "ext [OPTIONS] <command> [repository] [-b <branch>] [path]"
  )
  opts.summary_indent = '  '
  opts.summary_width = 24
  summary_width = 53

  project_classes.each do |project_class|
    project_class.fill_in_opts(opts, main_options, sub_options,
      :summary_width => summary_width)
  end

  opts.on("--type TYPE", "-t TYPE",
    String,
    *"The type of project the main project is.
      For example, 'rails'.".lines_by_width(summary_width)
  ) {|type| sub_options[:scm] = main_options[:type] = type}
  opts.on("--scm SCM", "-s SCM",
    String,
    *"The SCM used to manage the main project.  For example, '--scm svn'.".lines_by_width(summary_width)
  ) {|scm| sub_options[:scm] = main_options[:scm] = scm}
  opts.on("--branch BRANCH", "-b BRANCH",
    String,
    *"The branch you want the
    subproject to checkout when doing 'ext install'".lines_by_width(summary_width)
  ) {|branch| sub_options[:branch] = main_options[:branch] = branch}
  opts.on("--revision REVISION", "-r REVISION",
    String,
    *"The revision you want the
    subproject to checkout when doing 'ext install'".lines_by_width(summary_width)
  ) {|revision| sub_options[:revision] = main_options[:revision] = revision}
  opts.on("--force_removal", "-f",
    String,
    *"When doing an uninstall of a subproject,
    remove it's files and subfolders, too.".lines_by_width(summary_width)
  ) {|branch| sub_options[:force_removal] = true}
  opts.on("--workdir DIR", "-w DIR", String, *"The working directory to execute commands from.  Use this if for some reason you
    cannot execute ext from the main project's directory (or if it's just inconvenient, such as in a script
    or in a Capistrano task)".lines_by_width(summary_width)) {|dir|
    raise "No such directory: #{dir}" unless File.exists?(dir) && File.directory?(dir)
    main_options[:workdir] = dir
  }
  opts.on(
    "--help", *"does the same as 'ext help'  If you use this with a command
    it will ignore the command and run help instead.".lines_by_width(summary_width)
  ) {main_options[:help] = true}
  opts.on("--version", *"Displays the version number of externals and then exits.
    Same as 'ext version'".lines_by_width(summary_width)) {
    main_options[:version] = true
  }
  opts
end

.project_class(scm) ⇒ Object 



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# File 'lib/externals/ext.rb', line 341

def self.project_class(scm)
  Externals.module_eval("#{scm.to_s.cap_first}Project", __FILE__, __LINE__)
end

.project_classes ⇒ Object 



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# File 'lib/externals/ext.rb', line 345

def self.project_classes
  retval = []
  registered_scms.each do |scm|
    retval << project_class(scm)
  end

  retval
end

.project_type_detector(name) ⇒ Object 



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# File 'lib/externals/ext.rb', line 756

def self.project_type_detector name
  Externals.module_eval("#{name.classify}Detector", __FILE__, __LINE__)
end

.project_type_files ⇒ Object 



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# File 'lib/externals/ext.rb', line 116

def self.project_type_files
  project_types.map do |project_type|
    "#{File.join(PROJECT_TYPES_DIRECTORY, project_type)}.rb"
  end
end

.project_types ⇒ Object 



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# File 'lib/externals/ext.rb', line 106

def self.project_types
  types = Dir.entries(PROJECT_TYPES_DIRECTORY).select do |file|
    file =~ /\.rb$/
  end

  types.map do |type|
    /^(.*)\.rb$/.match(type)[1]
  end
end

.registered_scms ⇒ Object 



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# File 'lib/externals/ext.rb', line 240

def self.registered_scms
  return @registered_scms if @registered_scms
  @registered_scms ||= []

  scmdir = File.join(File.dirname(__FILE__), 'scms')

  Dir.entries(scmdir).each do |file|
    if file =~ /^(.*)_project\.rb$/
      @registered_scms << $1
    end
  end

  @registered_scms
end

.run(*arguments) ⇒ Object 



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# File 'lib/externals/ext.rb', line 180

def self.run *arguments
  main_options = {}
  sub_options = {}

  opts = new_opts main_options, sub_options

  args = opts.parse(arguments)

  unless args.nil? || args.empty?
    command = args[0]
    args = args[1..(args.size - 1)] || []
  end

  command &&= command.to_sym

  command = :help if main_options[:help]
  command = :version if main_options[:version]

  if !command || command.to_s == ''
    puts "hey... you didn't tell me what you want to do."
    puts "Try 'ext help' for a list of commands"
    exit
  end

  unless COMMANDS.index command
    puts "unknown command: #{command}"
    puts "for a list of commands try 'ext help'"
    exit
  end


  Dir.chdir(main_options[:workdir] || ".") do
    self.new(main_options).send(command, args, sub_options)
  end
end

Instance Method Details

#checkout(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 657

def checkout args, options
  options ||= {}

  repository = args[0]
  path = args[1] || "."

  main_project = do_checkout_or_export repository, path, options, :checkout

  if path == "."
    path = main_project.name
  end

  Dir.chdir path do
    self.class.new({}).co [], {} #args, options
  end
end

#configuration ⇒ Object 



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# File 'lib/externals/ext.rb', line 292

def configuration
  return @configuration if @configuration

  file_string = ''
  if File.exists? '.externals'
    open('.externals', 'r') do |f|
      file_string = f.read
    end
  end
  @configuration = Configuration::Configuration.new(file_string)
end

#export(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 674

def export args, options
  options ||= {}

  repository = args[0]
  path = args[1] || "."

  main_project = do_checkout_or_export repository, path, options, :export

  if path == "."
    path = main_project.name
  end

  Dir.chdir path do
    self.class.new({}).ex [], {} #args, options
  end
end

#freeze(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 376

def freeze args, options
  project = subproject_by_name_or_path(args[0])

  raise "No such project named #{args[0]}" unless project

  revision = args[1] || project.current_revision

  section = configuration[project.path]

  if section[:branch]
    branch = project.current_branch
    if branch
      section[:branch] = branch
    else
      section.rm_setting :branch
    end
  end
  section[:revision] = revision
  configuration.write '.externals'
  reload_configuration

  subproject_by_name_or_path(args[0]).up
end

#help(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 223

def help(args, options)
  puts "There's a tutorial available at http://nopugs.com/ext-tutorial\n\n"
  puts "#{self.class.new_opts({},{}).to_s}\n\n"

  puts "\nCommands that apply to the main project or the .externals file:"
  puts "#{MAIN_COMMANDS.join(', ')}\n\n"
  print_commands(MAIN_COMMANDS_HASH)

  puts "\nCommands that apply to the main project and all subprojects:"
  puts "#{FULL_COMMANDS.join(', ')}\n\n"
  print_commands(FULL_COMMANDS_HASH)

  puts "\nCommands that only apply to the subprojects:"
  puts "#{SHORT_COMMANDS.join(', ')}\n\n"
  print_commands(SHORT_COMMANDS_HASH)
end

#init(args, options = {}) ⇒ Object 



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# File 'lib/externals/ext.rb', line 691

def init args, options = {}
  raise ".externals already exists" if File.exists? '.externals'

  scm = options[:scm]
  type = options[:type]

  if !scm
    possible_project_classes = self.class.project_classes.select do |project_class|
      project_class.detected?
    end

    raise "Could not determine this project's scm" if  possible_project_classes.empty?
    if possible_project_classes.size > 1
      raise "This project appears to be managed by multiple SCMs: #{
      possible_project_classes.map(&:to_s).join(',')}
Please explicitly declare the SCM (using --git or --svn, or, by creating .externals manually"
    end

    scm = possible_project_classes.first.scm
  end

  if !type
    possible_project_types = self.class.project_types.select do |project_type|
      self.class.project_type_detector(project_type).detected?
    end

    if possible_project_types.size > 1
      raise "We found multiple project types that this could be: #{possible_project_types.join(',')}
Please use the --type option to tell ext which to use."
    elsif possible_project_types.size == 0
      puts "WARNING: We could not automatically determine the project type.
      Be sure to specify paths when adding subprojects to your .externals file"
    else
      type = possible_project_types.first
    end
  end

  config = Configuration::Configuration.new_empty
  raise ".externals already exists" if File.exists?('.externals')

  config.add_empty_section '.'

  # TODO: If we are using subversion, we should warn about not setting a branch
  if scm == "svn"
    if options[:branch]
      config['.'][:repository] = SvnProject.extract_repository(
        SvnProject.info_url,
        options[:branch]
      )
    elsif args[0]
      config['.'][:repository] = args[0].strip
    end
  end

  config['.'][:scm] = scm
  config['.'][:type] = type if type

  config.write '.externals'
  reload_configuration
end

#install(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 419

def install args, options
  if !File.exists? '.externals'
    STDERR.puts "This project does not appear to be managed by externals.  Try 'ext init' first"
    exit NO_EXTERNALS_FILE
  end
  repository = args[0]
  path = args[1]

  orig_options = options.dup

  scm = options[:scm]

  scm ||= infer_scm(repository)

  unless scm
    STDERR.puts "Unable to determine SCM from the repository name.
You need to either specify the scm used to manage the subproject
that you are installing. Use an option to specify it
(such as --git or --svn)"
    exit COULD_NOT_DETERMINE_SCM
  end

  project = self.class.project_class(scm).new(:repository => repository,
    :path => path || path_calculator.new, :scm => scm)
  path = project.path

  raise "no path" unless path

  raise "already exists" if configuration[path]

  project.branch = options[:branch] if options[:branch]
  project.revision = options[:revision] if options[:revision]

  attributes = project.attributes.dup
  attributes.delete(:path)
  configuration[path] = project.attributes
  configuration.write '.externals'
  reload_configuration

  project.co

  update_ignore args, orig_options
end

#install_project_type(name) ⇒ Object 



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# File 'lib/externals/ext.rb', line 760

def install_project_type name
  self.path_calculator = Externals.module_eval("#{name.classify}ProjectType::DefaultPathCalculator", __FILE__, __LINE__)
end

#main_project ⇒ Object 



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# File 'lib/externals/ext.rb', line 288

def main_project
  projects.detect {|p| p.main_project?}
end

#print_commands(commands) ⇒ Object 



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# File 'lib/externals/ext.rb', line 216

def print_commands(commands)
  commands.each do |command|
    puts Command.new(*command)
  end
  puts
end

#projects ⇒ Object 



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# File 'lib/externals/ext.rb', line 255

def projects
  return @projects if @projects
  @projects = []
  configuration.sections.each do |section|
    @projects << Ext.project_class(section[:scm]||infer_scm(section[:repository])).new(
      section.attributes.merge(:path => section.title))
  end
  #let's set the parents of these projects
  main = main_project
  subprojects.each {|subproject| subproject.parent = main}
  @projects
end

#reload_configuration ⇒ Object 



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# File 'lib/externals/ext.rb', line 304

def reload_configuration
  @configuration = nil
  @projects = nil
  configuration
end

#status(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 535

def status args, options
  options ||= {}
  scm = options[:scm]

  if !scm
    scm ||= configuration['.']
    scm &&= scm['scm']
  end

  if !scm
    possible_project_classes = self.class.project_classes.select do |project_class|
      project_class.detected?
    end

    raise "Could not determine this projects scm" if  possible_project_classes.empty?
    if possible_project_classes.size > 1
      raise "This project appears to be managed by multiple SCMs: #{
      possible_project_classes.map(&:to_s).join(',')}
Please explicitly declare the SCM (by using --git or --svn, or,
by creating the .externals file manually"
    end

    scm = possible_project_classes.first.scm
  end

  unless scm
    raise "You need to either specify the scm as the first line in .externals, or use an option to specify it
      (such as --git or --svn)"
  end

  project = main_project
  project.scm ||= scm
  project.st

  self.class.new({}).st [], {} #args, options
end

#subproject_by_name_or_path(name) ⇒ Object Also known as: subproject 



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# File 'lib/externals/ext.rb', line 268

def subproject_by_name_or_path name
  name = name.strip
  project = subprojects.detect {|p| p.path.strip == name}
  project ||= subprojects.detect do |p|
    File.split(p.path).last.strip == name
  end
  project ||= subprojects.detect do |p|
    p.name == name
  end
end

#subprojects ⇒ Object 



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# File 'lib/externals/ext.rb', line 280

def subprojects
  s = []
  projects.each do |project|
    s << project unless project.main_project?
  end
  s
end

#switch(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 572

def switch args, options
  branch = args[0]

  options ||= {}
  scm = options[:scm]

  if !scm
    scm ||= configuration['.']
    scm &&= scm['scm']
  end

  if !scm
    possible_project_classes = self.class.project_classes.select do |project_class|
      project_class.detected?
    end

    raise "Could not determine this projects scm" if  possible_project_classes.empty?
    if possible_project_classes.size > 1
      raise "This project appears to be managed by multiple SCMs: #{
      possible_project_classes.map(&:to_s).join(',')}
Please explicitly declare the SCM (by using --git or --svn, or,
by creating the .externals file manually"
    end

    scm = possible_project_classes.first.scm
  end

  unless scm
    raise "You need to either specify the scm as the first line in .externals, or use an option to specify it
      (such as --git or --svn)"
  end

  old_config = configuration
  project = main_project
  project.scm ||= scm

  if project.current_branch == branch
    puts "Already on branch #{branch}"
  else
    project.switch branch, options
    project.up

    reload_configuration

    #update subprojects
    self.class.new({}).up [], {} #args, options

    removed_project_paths = old_config.removed_project_paths(
      configuration
    ).select{|path| File.exists?(path)}

    if !removed_project_paths.empty?
      puts "WARNING: The following subprojects are no longer being maintained in the
.externals file.  You might want to remove them.  You can copy and paste the
commands below if you actually wish to delete them."
      removed_project_paths.each do |path|
        if File.exists? path
          puts "  rm -r #{path}"
        end
      end
    end
  end
end

#touch_emptydirs(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 504

def touch_emptydirs args, options
  require 'find'

  excludes = ['.','..','.svn', '.git']

  excludes.dup.each do |exclude|
    excludes << "./#{exclude}"
  end

  paths = []

  Find.find('.') do |f|
    if File.directory?(f)
      excluded = false
      File.split(f).each do |part|
        exclude ||= excludes.index(part)
      end

      if !excluded && ((Dir.entries(f) - excludes).size == 0)
        paths << f
      end
    end
  end

  paths.each do |p|
    open(File.join(p,".emptydir"), "w").close
  end

end

#unfreeze(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 400

def unfreeze args, options
  project = subproject_by_name_or_path(args[0])

  raise "No such project named #{args[0]}" unless project

  section = configuration[project.path]

  unless section[:revision]
    puts "Uhh... #{project.name} wasn't frozen, so I can't unfreeze it."
    exit
  end

  section.rm_setting :revision
  configuration.write '.externals'
  reload_configuration

  subproject_by_name_or_path(args[0]).up
end

#uninstall(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 463

def uninstall args, options
  raise "Hmm... there's no .externals file in this directory." if !File.exists? '.externals'

  project = subproject_by_name_or_path(args[0])

  raise "No such project named #{args[0]}" unless project

  main_project.drop_from_ignore project.path


  configuration.remove_section(project.path)
  configuration.write '.externals'
  reload_configuration

  if options[:force_removal]
    Dir.chdir File.dirname(project.path) do
      rm_rf File.basename(project.path)
    end
  end
end

#update(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 636

def update args, options
  options ||= {}
  scm = options[:scm]

  if !scm
    scm ||= configuration['.']
    scm &&= scm['scm']
  end

  unless scm
    raise "You need to either specify the scm as the first line in .externals, or use an option to specify it
      (such as --git or --svn)"
  end

  project = main_project
  project.scm ||= scm
  project.up

  self.class.new({}).up [], {} #args, options
end

#update_ignore(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 484

def update_ignore args, options
  scm = configuration['.']
  scm = scm['scm'] if scm

  scm ||= options[:scm]

  unless scm
    raise "You need to either specify the scm as the first line in .externals (for example, scm = git), or use an option to specify it
      (such as --git or --svn)"
  end

  project = self.class.project_class(scm).new(:path => ".")

  raise "only makes sense for main project" unless project.main_project?

  subprojects.each do |subproject|
    project.update_ignore subproject.path
  end
end

#version(args, options) ⇒ Object 



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# File 'lib/externals/ext.rb', line 752

def version(args, options)
  puts Externals::VERSION
end